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Deleted 04.lens/01.lens-main/textbook.en.md, 04.lens/01.lens-main/textbook.es.md, 04.lens/01.lens-main/textbook.fr.md, 04.lens/02.lens-overview/2-centered-refracting-surfaces-1-all.gif, 04.lens/02.lens-overview/2-centered-refracting-surfaces-direction-axis.gif, 04.lens/02.lens-overview/2-refracting-surface-physical-system.jpeg, 04.lens/02.lens-overview/Const_lens_conv_point_AapresO.gif, 04.lens/02.lens-overview/Const_lens_conv_point_AavantF2.gif, 04.lens/02.lens-overview/Lentille_epaisse_Gauss_incl_v1.gif, 04.lens/02.lens-overview/Lentille_epaisse_principe_ok.gif, 04.lens/02.lens-overview/cheatsheet.en.md, 04.lens/02.lens-overview/cheatsheet.es.md, 04.lens/02.lens-overview/cheatsheet.fr.md, 04.lens/02.lens-overview/lens-convergent-N3-en.jpeg, 04.lens/02.lens-overview/lens-convergent-N3-es.jpeg, 04.lens/02.lens-overview/lens-convergent-N3-fr.jpeg, 04.lens/02.lens-overview/lens-divergent-N3-en.jpeg, 04.lens/02.lens-overview/lens-divergent-N3-es.jpeg, 04.lens/02.lens-overview/lens-divergent-N3-fr.jpeg, 04.lens/02.lens-overview/lentille_relle_representation_v1.gif, 04.lens/02.lens-overview/thick-lens-water-air.gif, 04.lens/03.lens-beyond/Einstein-ring-free.jpg, 04.lens/03.lens-beyond/annex.en.md, 04.lens/03.lens-beyond/annex.es.md, 04.lens/03.lens-beyond/annex.fr.md, 04.lens/03.lens-beyond/lensball-brut-820-760.jpg, 04.lens/03.lens-beyond/lentille-boule-orleans-1bis.jpg, 04.lens/04.lens-parallel-1/default.en.md, 04.lens/04.lens-parallel-1/default.es.md, 04.lens/04.lens-parallel-1/default.fr.md, 04.lens/05.lens-parallel-2/form.en.md, 04.lens/05.lens-parallel-2/form.es.md, 04.lens/05.lens-parallel-2/form.fr.md, 04.lens/06.lens-level-down/page.en.md, 04.lens/06.lens-level-down/page.es.md, 04.lens/06.lens-level-down/page.fr.md, 04.lens/07.lens-level-up/portal.en.md, 04.lens/07.lens-level-up/portal.es.md, 04.lens/07.lens-level-up/portal.fr.md, 04.lens/topic.en.md, 04.lens/topic.es.md, 04.lens/topic.fr.md files

Deleted 03.spherical-refracting-surface/01.spherical-refracting-surface-main/textbook.en.md, 03.spherical-refracting-surface/01.spherical-refracting-surface-main/textbook.es.md, 03.spherical-refracting-surface/01.spherical-refracting-surface-main/textbook.fr.md, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/cheatsheet.en.md, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/cheatsheet.es.md, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/cheatsheet.fr.md, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/dioptre1ok.png, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/dioptre2ok.png, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/dioptre3ok.png, 03.spherical-refracting-surface/02.spherical-refracting-surface-overview/dioptre4ok.png, 03.spherical-refracting-surface/03.spherical-refracting-surface-beyond/annex.en.md, 03.spherical-refracting-surface/03.spherical-refracting-surface-beyond/annex.es.md, 03.spherical-refracting-surface/03.spherical-refracting-surface-beyond/annex.fr.md, 03.spherical-refracting-surface/04.spherical-refracting-surface-parallel-1/default.en.md, 03.spherical-refracting-surface/04.spherical-refracting-surface-parallel-1/default.es.md, 03.spherical-refracting-surface/04.spherical-refracting-surface-parallel-1/default.fr.md, 03.spherical-refracting-surface/05.spherical-refracting-surface-parallel-2/form.en.md, 03.spherical-refracting-surface/05.spherical-refracting-surface-parallel-2/form.es.md, 03.spherical-refracting-surface/05.spherical-refracting-surface-parallel-2/form.fr.md, 03.spherical-refracting-surface/06.spherical-refracting-surface-level-down/page.en.md, 03.spherical-refracting-surface/06.spherical-refracting-surface-level-down/page.es.md, 03.spherical-refracting-surface/06.spherical-refracting-surface-level-down/page.fr.md, 03.spherical-refracting-surface/07.spherical-refracting-surface-level-up/portal.en.md, 03.spherical-refracting-surface/07.spherical-refracting-surface-level-up/portal.es.md, 03.spherical-refracting-surface/07.spherical-refracting-surface-level-up/portal.fr.md, 03.spherical-refracting-surface/topic.en.md, 03.spherical-refracting-surface/topic.es.md, 03.spherical-refracting-surface/topic.fr.md files

Deleted 01.curriculum/01.physics-chemistry-biology/03.Niv3/02.Geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/02.spherical-refracting-surface/07.spherical-refracting-surface-level-up/page.en.md